I've seen this term used for a number of performances, but I couldn't find a definition for this word. Almost all results on Google lead me to a band named "Coldplay", which is not the one I'm looking for.
Assuming from the performances where I've seen this word, it seemed to me that it means a musical piece played by someone for the first time only by reading the notes, without having practiced it before the performance. However, this is only my assumption. Is there a clear definition for the word "coldplay"?